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Cybersecurity · head to head

MetricStream vs Tenable Nessus

MetricStream logo

MetricStream

Cybersecurity

Enterprise GRC suite for large regulated organisations, with implementation costs that exceed the licence

From
On request
Rated
-
Full reviewWebsite
Tenable Nessus logo

Tenable Nessus

Cybersecurity

Network vulnerability scanner

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Tenable Nessus has a free tier, so it costs nothing to try first.
  • Each has a real cost: MetricStream implementation typically costs one and a half to two and a half times the first year licence, so a one million dollar licence carries a one and a half to two and a half million dollar rollout that rarely appears in the initial business case.; Tenable Nessus nessus Professional is $4,790 for one year, sold as an annual licence rather than a per scan or usage based fee
  • They diverge on capability: MetricStream covers Enterprise and operational risk, Tenable Nessus covers Network scanning.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which MetricStream and Tenable Nessus actually diverge.

Attributes where MetricStream and Tenable Nessus differ
AttributeMetricStreamTenable Nessus
Starting priceOn requestFree
Pricing modelquotesubscription
Free tierNoYes
PlatformsWebWindows, Linux, Macos, Cloud
FoundedUnknown2002

Identical on both: user rating (Not yet rated), category (Cybersecurity).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in MetricStream

  • Enterprise and operational risk
  • Regulatory compliance
  • Internal audit
  • Third-party risk
  • Cyber risk quantification
  • Policy and case management
  • Content libraries
  • ESG reporting

Only in Tenable Nessus

  • Network scanning
  • Vulnerability detection
  • Configuration assessment
  • Malware detection
  • Compliance checking
  • Cloud security assessment
  • Mobile scanning
  • API access

What people use each for

The jobs each tool is most often brought in to do.

MetricStream

  • A multinational bank mapping one control set against obligations from several regulators and needing to evidence the mapping to examinersnot Tenable Nessus
  • An insurer consolidating separate risk, audit and vendor systems that currently produce contradictory numbers to the boardnot Tenable Nessus
  • A pharmaceutical company that must track regulatory change across jurisdictions and show what each change affectednot Tenable Nessus
  • An organisation whose three lines of defence must share one risk taxonomy rather than three overlapping spreadsheetsnot Tenable Nessus

Tenable Nessus

  • Vulnerability scanning of servers, network devices and web applicationsnot MetricStream
  • Configuration and compliance auditing against hardening benchmarksnot MetricStream
  • Point in time assessments by consultants and penetration testersnot MetricStream

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

MetricStream

  • Implementation typically costs one and a half to two and a half times the first year licence, so a one million dollar licence carries a one and a half to two and a half million dollar rollout that rarely appears in the initial business case.
  • Full deployment takes six to eighteen months, during which the organisation runs old and new processes in parallel and the promised efficiency gain is negative.
  • Per-user pricing in the low thousands per year per seat discourages giving access to the first line of defence, which is precisely where risk data originates, so many deployments end up with data still arriving by spreadsheet.
  • Configuration flexibility comes at the price of specialist skills, and organisations become dependent on MetricStream partners or a small internal team, making later changes slow and expensive.
  • The interface and workflow feel enterprise-heavy next to modern compliance tools, and infrequent business users find it hard, which suppresses the participation the platform is meant to enable.

Tenable Nessus

  • Nessus Professional is $4,790 for one year, sold as an annual licence rather than a per scan or usage based fee
  • Support beyond the base entitlement costs an extra $400 per year for Advanced Support with 24x365 phone and chat access
  • The on demand training course is a separate $275 purchase for a single person for one year
  • Multi year discounts require paying for two or three years up front

Pricing, plan by plan

MetricStream

On request
  • MetricStream GRC$undefined/year
    • Enterprise risk, audit, compliance and third-party modules
    • Regulatory content libraries
    • Multi-entity and multi-jurisdiction support

Tenable Nessus

Free
  • Nessus EssentialsFree
    • Up to 16 ips
    • Network scanning
    • Vulnerability assessment
  • Nessus Professional$2600/year
    • Unlimited targets
    • Enterprise features
    • Advanced analytics
  • Nessus Expert$5200/year
    • All Professional features
    • Cloud integration
    • Advanced reporting

Which should you pick?

Choose MetricStream if

  • You need enterprise and operational risk.
  • You also want regulatory compliance.
MetricStream review

Choose Tenable Nessus if

  • You need network scanning.
  • You want to start without paying.
  • You work on Windows, Linux, Macos, Cloud.
  • You also want vulnerability detection.
Tenable Nessus review

Questions people ask

Is MetricStream or Tenable Nessus better?
Neither clearly leads. MetricStream starts at On request and Tenable Nessus at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, MetricStream or Tenable Nessus?
Tenable Nessus has a free tier; the other does not. Paid plans start at On request for MetricStream and Free for Tenable Nessus.
Does MetricStream or Tenable Nessus run on more platforms?
MetricStream runs on Web. Tenable Nessus runs on Windows, Linux, Macos, Cloud.
Can I use Tenable Nessus for free?
Yes. Tenable Nessus has a free tier, so you can try it without paying. MetricStream starts at On request.
What is MetricStream best used for?
MetricStream is most often used for a multinational bank mapping one control set against obligations from several regulators and needing to evidence the mapping to examiners, an insurer consolidating separate risk, audit and vendor systems that currently produce contradictory numbers to the board, a pharmaceutical company that must track regulatory change across jurisdictions and show what each change affected, an organisation whose three lines of defence must share one risk taxonomy rather than three overlapping spreadsheets. Of those, a multinational bank mapping one control set against obligations from several regulators and needing to evidence the mapping to examiners and an insurer consolidating separate risk, audit and vendor systems that currently produce contradictory numbers to the board are not what Tenable Nessus is typically brought in for.
What can MetricStream do that Tenable Nessus cannot?
MetricStream covers Enterprise and operational risk, Regulatory compliance, Internal audit, Third-party risk. Tenable Nessus covers Network scanning, Vulnerability detection, Configuration assessment, Malware detection.

Answered from the vendors’ own pages

MetricStream: What does MetricStream cost?

It is quoted. Market data suggests roughly 75,000 to 150,000 US dollars a year for small enterprise deployments, 250,000 to 500,000 for medium and 750,000 upwards for large.

Tenable Nessus: What are the three Nessus offerings?

Nessus Essentials is a free introductory offering for educators, students, and career starters, limited to 16 IPs for scanning. Nessus Professional is designed for consultants and SMBs, providing unlimited IT scans across any location. Nessus Expert is the premium offering extending Professional with web application scanning, infrastructure-as-code scanning, and external attack surface assessment up to 5 domains.

Source
MetricStream: How long is implementation?

Six to eighteen months for a full platform deployment, and the services cost usually exceeds the first year licence.

Tenable Nessus: What OS platforms does Nessus support?

Nessus runs on Debian/Kali Linux, Fedora, FreeBSD, Mac OS X, Red Hat/CentOS, SUSE Linux, Ubuntu, and various Windows versions including Server 2008, 2012, and Windows 7-10.

Source
MetricStream: Is it right for a mid-market company?

Usually not. Its depth suits organisations with several regulators and formal three lines of defence structures.

Tenable Nessus: Can I use Nessus to scan third-party networks as a consultant?

Yes, Tenable permits you to use Nessus to scan third-party networks. Nessus Professional is ideal for consultants.

Source
MetricStream: Does it replace SOC 2 automation tools?

It can cover the framework, but it is not designed for the automated evidence collection those tools do cheaply.

Tenable Nessus: Can Nessus perform PCI external scanning?

Yes, you can use Nessus Professional to perform external network scans as required by the PCI DSS 11.2.2 requirement.

Source
Tenable Nessus: What additional features does Nessus Expert provide?

Web application scanning, which is dynamic application security testing (DAST) providing comprehensive visibility and insight into web application security issues; scanning code repositories for vulnerabilities; and assessing external attack surface with subdomain discovery.

Source
Tenable Nessus: What support options exist for Nessus Professional?

Standard Support includes software upgrades, patches, plugin access, and 24x7 support via chat and community portal. Advanced Support adds 24x7 phone access and committed SLAs: P1 less than 2 hours, P2 less than 4 hours, P3 less than 12 hours, P4 less than 24 hours.

Source
Tenable Nessus: How frequently are Nessus plugins updated?

Nessus plugins are updated daily, based on when vendors and security research sites publish new vulnerabilities.

Source
Tenable Nessus: How does licensing work in virtual machine environments?

Whether you are using Nessus in a physical or a virtual environment, the IP addresses or hosts that you are scanning from must be licensed.

Source
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